Improvement in machines for trimming and burnishing the soles and heels of boots



L. GRAF.

Machines for Trimming and Burnishing the Sales and Heels of Boats andShoe N0.I5l,87 2, Patentedlung 9,1374.

3 Sheets--Sheet2.

L. GRAF. Machines for Trimming and Burnishing the Sales and Heels ofBoots and Shoes. N0.l5l,872.

Patented June 9,1874.

ZXM 2% v Sh L. G AF. 3 eets SheetS Machines for Trimming and Burnishingthe Sales and Heels of Baotsand Shoes. N0,]5l,87 2 'PatentedJune,9,l874.

UNITED STATES PATENT @FFIGE.

LEOPOLD GRAF, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN MACHINES FOR TRIMMING AND BURNlSHlNG THE SOLES AHD HEELS0F BOOTS AND SHOES.

Specification forming part of Letters Patent No. 151,8?2, dated June 9,1874; application filed April 20, 1874.

To all whom it may concern:

Be it known that I, LEOPOLD GRAF, of Newark, in the county of Essex andState of New Jersey, have invented a new and useful Improvement inMachines for Trimming and Burnishing the Heels and Soles of Boots and 3is a front view of the same. Fig. 4 is a front view of the same whenarranged for burnishmg a heel. Fig. 5 is a side viewof the same. Fig. 6is a similar view of the same when arranged for burnishing the edge of asole.

Similar letters indicate corresponding parts.

, This invention relates particularly to the means for adjusting and forimparting motion to the trimming-tool or cutter, and to the burnisher,and to the means for securing the shoe, and'for presenting the edge ofthe sole or the heel to the cutter and to the burnisher.

In the drawing, the letter A designates a standard, which-supports thepillow-blocks a a for the driving-shaft B of my machine. On this shaftis mounted loosely a cone-pulley, G, which can be coupled with the shaftby a clutch, D, so that by moving the clutch in and out of gear with thecone-pulley the machine can be readily started and stopped. On the endof this shaft is mounted a disk, E, Fig. 1, with a diametricaldovetailed groove, I), in which is secured, a pin, 0, that connects by arod, d, with a sliding carriage, F. By moving the pin 0 in the groove 1)the throw of the carriage can be regulated. From this carriage projectsa bracket, 0, in which is secured the tool that acts on the sole or heelof a boot or shoe. When the machine is to be used for trimming the edgeof a sole or a heel, the pin 0 and rod d are removed, and over the diskE is secured a chuck, G, carrying a pulley, f, Figs. 3 and 3*,whichconnects by a belt, 9,

with a pulley, h, mounted on the inner end of that is fastened in thebracket 0 of the carriage F. The outer end of the spindle i is supportedby a head, m, the edges of which are V-shaped and fit into acorresponding groove of the gage a, which is finally secured in positionby a set-screw. From the head m extends a rod, 0, to a screw, p, whichis tapped in a hand-wheel, q, situated in a slot provided for itsreception in an arm, a, which projects from the carriage F. By turningthis hand-wheel the head m is raised or depressed, and the cutter H canbe adjusted at the required inclination. The hanger, I is alsoadjustable in the bracket 6, and thereby the operation of regulating theposition of the cutter is still further facilitated. The boot or shoe,for the purpose of trimming the edge of its sole, is secured in a jack,J, which is supported by. a vertical rod, K, the lower pointed end ofwhich is vstepped in a cavity, 8, made for this purpose in a treadle, L,which is provided withia .balanceweight, M, that has a tendency to forcethe rod K upward, so that the workman," by stepping on the front part ofsaid treadle, can regulate the, pressure which brings the 'sole incontact with the cutter. The upper end of the rod K turns in an eye, t,at the end of an arm, M, said eye being prevented from slidingup anddown on the rod by a pin, which catches in a circular groove in the rodK. The arm M passes through staples a, which aresecured to the standardA, and its rear end is pivoted to a lever, N, that has its fulcrum inthe end of a link, 0, which is pivoted to a stud, 17, secured in thestandard A. The upper end of the le ver N is subjected to the action ofa spring, 10, which has a tendency to force the rod K, together with thejack J, inward toward the column A, whereby the tendency of the cutterto force the shoe outward away from the column is counteracted, and theWorkman is enabled to keep the sole easily in the proper relation towardthe cutter, and at the same time the arm M and its lever N are free toaccommodate themselves to any desired position of the shoe. On the rod Kis firmly secured an arm, 1?, and through the end of this arm passes apointed screw, (1, which supports one end of a frame, Q, the oppositeend of which is supported by a pivot, b, catching in a socket in theupper end of the rod K. From the frame Q extends a rod, 0, to a slide,B, which is fitted on the rod K, and which connects by a cord, d with aweight, S, the object of which is to counterbalance the weight of saidframe, with its appendages, during the operation of trimming orburnishing the side edges of the sole. The frame Q forms the guide for acarriage, T, which is adjusted in the required position by a hand-screw,U, and in which is secured the shoe by means of a toe-clamp, V, and aheel-clamp, X. The toeclamp is hinged to an arm, d extending from thefront piece of the carriage, and the toe part of the shoe is placed on asupport, 6, secured to the rear piece of the carriage, and then thetoe-clamp is turned down and fast ened by means of its screw. Theheel-clamp X is pivoted to a frame, Y, which is secured to the carriageT by means of pivots, f, (see Fig. 1*,) and which is provided with aheelsupport, g, at a point opposite to the clamps X. The forked end ofthis clamp is made to catch over the head of the last in the shoe, thenthe heel of the shoe is placed on the heelsupport 9, and by tighteningthe heel-clamp the heel part of the shoe is firmly secured. The frame Yis hinged in the carriage, so that the same can yield and accommodateitself to the action of the toe-clamp without producing any undue strainin the parts which serve to retain the shoe.

During the operation of trimming the toepart of the sole, the frame Q ofthe jack is turned down to the position shown in Fig. 1, and it is swungin either direction a sufficient distance to bring the cutter in contactwith the entire front edge of the sole. The frame Q is then turned upgradually to a horizontal position, in which the same is partiallybalanced by the weight S, and by turning the hand-screw U the carriage Tis moved in the frame Q, so as to expose the side edge of the sole tothe action of the cutter. If one side edge is finished, the frame Q isswung round so as to expose the other side edge to the cutter. Duringthis entire operation the pressure which holds the edge of the sole incontact with the cutter is regulated by the weight M", and by thepressure of the foot on the treadle L, and by the action of thebalance-weights M and S, the entire operation is rendered comparativelyeasy for the workman. After the edge of the sole has been trimmed, thehanger I, with the cutter H, are removed and the burnisher A, Figs. 6and 6*, is inserted into the bracket 0 of the carriage F. This burnisheris secured in a hanger, B, and it is combined with a gage, M, Fig. 6*,which is fitted into the head of the hanger, so that it can be moved inthe same by a tubular screw, ]L2. The burnisher A fits into the cavityof the head, and

under the gage h, and it is secured in position by a nut, M, whichscrews on a bolt,7 t ex. tending through the tubular screw W. In theburnisher is an oblong slot, so that it can be adjusted as theburnishing-snrface wears off. By these means the gage and the burnishercan be readily adjusted to soles of various thicknesses. During theoperation of burnishing, the carriage F receives a reciprocating motionby means of the jack J above described. When the heel of the shoe is tobe exposed to the action of a cutter or burnisher, 1 secure the same ina jack, J, which is shown in Fig. 2, and which is somewhat differentfrom the jack J. Both jacks have in common the upright rod K, treadle L,weight M", arm M, lever N, and spring to. On the rod K of the jack J 0is secured an arm, 1", similar to the arm P of the jack J. Through theend of this arm extends a rod, i, which carries on its inner end theheel-clamp j, and which is provided with two sets of ratchet-teeth, n I,one set being intended to engage with a leverpawl, m, that is hinged tothe arm P", and serves to press the rod t" inward against the shoe. Theother set, Z, of ratchet-teeth engages with a stop-pawl, n, whichprevents the rod *5 from receding. Said stop-pawl is hinged to a frame,Q one end of which turns on the rod t", while its other end turns 011 apivot, 0, secured in the upright rod K. On this frame is fitted thetoe-clamp p, which is composed of two prongs extending from a head thatslides on the frame Q so that said prongs can be made to catch over thetoe-part of the shoe, as shown in Fig. 2.

By this arrangement the heel of the shoe can be exposed to the action ofthe cutter H, and by turning the frame Q" the cutter can be made to actsuccessively on the whole surface of said heel.

For the purpose of polishing the heel, the cutter H is replaced by theburnisher A", (see Fig. 5,) which is hinged in the hanger B", and whichconnects by a rod, 0, with the screw 12, that is tapped into thehand-wheel q, as already described. By turning this hand-wheel theburnisher A can be set to any desired inclination, according to theshape of the heel to be burnished.

When the burnisher is used, the carriage F receives a reciprocatingmotion, and, if desired, the burnisher may be heated by gas orotherwise.

WVhat I claim as new, and desire to secure by Letters Patent, is-

1. The chuck G, provided with the pulley f fittin g over the disk E onthe drivingshaft B, in combination with the driving-shaft t of thecutter H, substantially as and for the purpose described.

2. The combination of a spring, 10, link-lever supporting jack,substantially as and for the purpose described.

4. The balance-weight S and slide R, in combination with the swingingframe Q of the jack J, substantially as andfor the purpose described.

5. The sliding carriage T, in combination with the swinging frame Q ofthe jack J, substantially as and for the purpose described.

' 6. The screw and hand-wheel q, in combination with the shaft 2',cutter H, and hanger I substantially as and for the purpose described.

'7. The gage n fitted 0n the head m, which supports the outer end of thecutter-shaft i, in combination with the adjusting-screw p and hanger T,substantially as and for the purpose set forth.

8. The burnisher A secured in the head of the hanger B by a nut, h, incombination with a gage, h which is adjusted in the head of the hangerby a screw, k substantially in the manner shown and described.

9. The rod 1;, provided with a double set of ratchet-teeth, andcarryingthe heel-clampj, in combination with alever-pawl, m, stoppawl n, and aswinging frame, Q, in the jack J", substantially as and'for'the purposeset forth.

Witnesses: LEOPOLD GRAF.

W. HAUFF, E; F. KASTENHUBER.

